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One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries

“Turning waste into wealth” and sustainable development are bright themes of modern society. Semi-coke is mainly made up of coal but contains around 15 wt% impurities. Nevertheless, semi-coke powders with sizes smaller than 3 mm generally cannot be used in metallurgical industries and are abandoned...

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Detalles Bibliográficos
Autores principales: Shi, Ming, Chen, Yuanzhen, Wen, Hua, Liu, Yongning
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091659/
https://www.ncbi.nlm.nih.gov/pubmed/35559278
http://dx.doi.org/10.1039/c8ra07899h
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author Shi, Ming
Chen, Yuanzhen
Wen, Hua
Liu, Yongning
author_facet Shi, Ming
Chen, Yuanzhen
Wen, Hua
Liu, Yongning
author_sort Shi, Ming
collection PubMed
description “Turning waste into wealth” and sustainable development are bright themes of modern society. Semi-coke is mainly made up of coal but contains around 15 wt% impurities. Nevertheless, semi-coke powders with sizes smaller than 3 mm generally cannot be used in metallurgical industries and are abandoned as solid waste, resulting in environmental contamination. Herein, boron doping followed by facile one-step heat treatment in the range of 2100 to 2700 °C has been carried out to process semi-coke powder waste. Thereby, the semi-coke powders can be graphitized to give sample carbon content values of over 95%. The best product so-prepared delivered reversible capacities of 351.5 mA h g(−1) at 0.1C, and 322 mA h g(−1) at 1C. Surprisingly, the capacity was maintained at 314.3 mA h g(−1) after 300 cycles at 1C, giving a decline rate of only 2.4% and presenting superior rate performance.
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spelling pubmed-90916592022-05-11 One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries Shi, Ming Chen, Yuanzhen Wen, Hua Liu, Yongning RSC Adv Chemistry “Turning waste into wealth” and sustainable development are bright themes of modern society. Semi-coke is mainly made up of coal but contains around 15 wt% impurities. Nevertheless, semi-coke powders with sizes smaller than 3 mm generally cannot be used in metallurgical industries and are abandoned as solid waste, resulting in environmental contamination. Herein, boron doping followed by facile one-step heat treatment in the range of 2100 to 2700 °C has been carried out to process semi-coke powder waste. Thereby, the semi-coke powders can be graphitized to give sample carbon content values of over 95%. The best product so-prepared delivered reversible capacities of 351.5 mA h g(−1) at 0.1C, and 322 mA h g(−1) at 1C. Surprisingly, the capacity was maintained at 314.3 mA h g(−1) after 300 cycles at 1C, giving a decline rate of only 2.4% and presenting superior rate performance. The Royal Society of Chemistry 2018-12-10 /pmc/articles/PMC9091659/ /pubmed/35559278 http://dx.doi.org/10.1039/c8ra07899h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Shi, Ming
Chen, Yuanzhen
Wen, Hua
Liu, Yongning
One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries
title One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries
title_full One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries
title_fullStr One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries
title_full_unstemmed One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries
title_short One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries
title_sort one-step heat treatment to process semi-coke powders as an anode material with superior rate performance for li-ion batteries
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091659/
https://www.ncbi.nlm.nih.gov/pubmed/35559278
http://dx.doi.org/10.1039/c8ra07899h
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